The fire started on the second floor and it wasn't long ______ the whole building was burned down.
| A．while | B．when | C．after | D．before |
Usually there might be a lot of accidents in the heavy fog.I happened to witness ________ this morning.
| A．it | B．those |
| C．each | D．one |
Surprisingly, Susan's beautiful hair reached below her knees and made ________ almost an overcoat for her.
| A．them | B．her |
| C．itself | D．herself |
When you are done with the book, just give it to Lucy or Helen or ________.
| A．whoever | B．wherever | C．whatever | D．however |
Half of ________ surveyed in 16 countries say they go first to their closest friend to share their deepest wishes and darkest fears.
| A．these | B．some |
| C．ones | D．those |
The doctor thought ________ would be good for you to have a holiday.
| A．this | B．that |
| C．one | D．it |